InspectorをLockして複製して・・・ってのが面倒だったので適当に作ったやつ　（もっといい感じのがあったのでパク・・リスペクト http://tsubakit1.hateblo.jp/entry/2016/10/10/234420）

ShowLockInspector.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEditor;
using System.Linq;
using System.Reflection;

public class ShowLockInspector {

	[MenuItem("GameObject/ShowLockInspector %l", false, 30)]
	private static void ShowInspector(){
		var inspectorType = typeof(Editor).Assembly.GetType("UnityEditor.InspectorWindow");
		var inspectorInstance = ScriptableObject.CreateInstance(inspectorType) as EditorWindow;
		inspectorInstance.ShowUtility();

		var isLocked = inspectorType.GetProperty("isLocked", BindingFlags.Instance | BindingFlags.Public);
		isLocked.GetSetMethod().Invoke(inspectorInstance, new object[] { true });
	}
}